/**
 * Copyright 2010 - 2017 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package jetbrains.exodus.entitystore;

import org.jetbrains.annotations.NotNull;

public class ReadOnlyPersistentEntity extends PersistentEntity {

    @NotNull
    protected final PersistentStoreTransaction txn;

    public ReadOnlyPersistentEntity(@NotNull final PersistentStoreTransaction txn, @NotNull PersistentEntityId id) {
        super(txn.store, id);
        this.txn = txn;
    }

    @Override
    @NotNull
    public PersistentStoreTransaction getTransaction() {
        return txn;
    }

    @Override
    protected void assertWritable() {
        super.assertWritable();
        throw new IllegalArgumentException("Can't update entity in snapshot transaction!");
    }
}
